{
  "bibcode": "2019GCN.23703....1X",
  "body": "L. P. Xin,  Y. J. Xiao, P. P. Zhang, R. S. Zhang,  J. Wang,   J. Y. Wei,   \nE. W. Liang,  X. G. Wang,    Y. G. Yang,  X. M. Lu,  L. Huang,    H. B. Cai,   \nY. L. Qiu,  Y. Xu, Y.  J. Xiao, Y. T. Zheng,  C. Wu,   J. S. Deng,  D. W. Xu, \nD. TURPIN, H. L. Li, and W. L. Dong, report:\n\nWe  started to observe  GRB 190114B  ( Siegel et al., GCN 23686 )  \nwith  GWAC-F60B 60cm optical telescope  at 19:46:26 UT, \nJan. 14th  2019,  about 14  min after the burst. \n\nThe afterglow reported by ( Goad et al., GCN 23691;  Fernandez-Garcia et al., GCN 23694; \nPozanenko et al., GCN 23696) was not detected  in R band images.  \nThe upper limit is estimated to be about 18.3 mag  calibrated by nearby USNO-B1.0 stars.\n\nGWAC-F60B is operated by Guangxi university and NAOC, CAS, at Xinglong observatory, China.\n\nThe message may be cited.",
  "circularId": 23703,
  "createdOn": 1547522145000,
  "email": "xlp@nao.cas.cn",
  "subject": "GRB 190114B: GWAC-F60B upper limit",
  "submitter": "L.P. Xin at NAOC  <xlp@nao.cas.cn>",
  "eventId": "GRB 190114B"
}